Combined vehicle-spring and shock-absorber.



J. O. PARRISH.

' COMBINED VEHICLE SPRING AND SHOCK ABSORBER.

APPLICATION TILED MAR 31. 1913.

Patented D60. 8

UNITED STATES.) PATENT ()FFICE.

JACOB 0. PARRISH. or POMONA. CALIFORNIA.

COMBINED VEHICLE-SPRING AND SI-lIOCK-ABSORBER.

Application filed March 31.

To all whom it may concern:

Be it known that I, J ACOB O. PARRISH, a citizen of the United States, and residing in the city of Pomona, county of Los Angeles, and State of California, have invented a new and useful Improvement in Combined V ehicle-Springs and Shock-Absorbers, of which the following is a specification.

This invention relates to vehicle springs, and the principal object is to provide a com bined vehicle supporting spring and shock absorber.

It is a further object to inclose the springs in a cylindrical casing, and to provide means to adjust the tension of the springs as well as the length of the spring rod.

In the drawings accompanying this specification and forming therewith the application for Letters Patent: Figure 1 is an elevation of one portion of the frame of an automobile showing the springs applied thereto, the axle being in section. Fig. 2 is a longitudinal section of the casing showing the springs and the adjusting means therefor. Fig. 3 is a front View of the clips which are applied to the Ibeam axle.

More specifically in the drawings, 5 designates the frame of an automobile havingathe spring hook 6 formed thereon, adjacent the axle 7 and wheel 8. Interposed between the hook 6 and the axle 7 is the spring member 9 secured to the hook and the axle and spaced a proper distance in the opposite direction on the frame is the pivot 10 to which is pivotally secured the strap 11, which forms a portion of a second spring member 9 secured to the opposite side of the axle.

The spring casing for member 9 is preferably a cylindrical or tubular structure, within which is reciprocally mounted the piston 14 which is connected to the piston rod 15. This rod is threaded in its engagement with the piston 11 and in turn is carried through a concentric bore in the closing cap 16 of the casing, and at its outer end is provided with an eye 17 which is secured by pivot pin 18 to the frame, the rcarwardly disposed piston rod being connected to the strap 11.

The closed end 19 of the cylindrical casing is provided with :1 lug 20 which is preferably bored to re rive a pivot pin 21 which is secured betwen. the blocks '22, a pair of Specification of Letters Patent.

Patented Dec. 8, 1 914.

1913. Serial No. 757.729.

these blocks being provided to engage with the axle, as described hereafter. Intermediate of the closed end 19 and the plunger ll of the cylinder, is mounted the coil spring 24, which is preferably of such length that it retains the plunger H on a tension approximately midway of the length of the cylindrical casing.

Bearing upon the opposite face of the plunger 11, and encircling the piston rod, is a lighter weight coiled spring 26, which bears against-the annular washer 27 which takes up on the inner end of the threaded sleeve 28, through which the plunger rod 15 is carried and slidably mounted. This threaded sleeve engages with a concentric threaded bore in the cap 16, and is provided at its outer end with a knurled rim 29 or wrench face as desired. By turning this sleeve inwardly spring 26 is placed under more compression and further restricts the action of the compression spring 2%.

A longitudinal slot 30, or a plurality of slots are cut in the wall of the casing adjacent the portion where the piston slides, and a headed screw pin 31 carried through said slot into a threaded bore in the piston to prevent displacement of the latter and assist in the adjustment of the spring tension, as well as allowing adjustment of the length of the rod 15, for different sized frames or to level the car.

The blocks 22 described as forming a pivotal support for the lower end of the spring unit are preferably U-shaped structures which fit intermediate of the upper and lower flanges of the I-beam axle frame. The upper portion is provided with studs 23 which are preferably threaded, and project through suitable bores in the upper flange 21 of the I-beam, nuts 27 being applied to secure this portion of the block.

Flanges 26 are provided extending from the lower outer edges of the blocks, which are preferably carried below the lower flange of the I-beam and are provided with a bore so disposed that a bolt 27' carried transversely of the beam will engage with the bore in the flange on the opposite side of the I-beam and beearried through the flange of the oppositely disposed block to secure the latter, by means of a nut 28.

The action on the springs will be readily understood, the weight upon the frame corripressing the springs 24, and when these coil spring iiritc! relmund the plan restricted in 4 action if .i 26, the ilis-iUIl h ed, by the pin l. in a vehicle spring in combination with a fianie of a Yt'lliClC and an I-beam axle adjacent thereto, of pivot blocks secured to said I-beani, a cyiindrical easing pivoted intermediate a pair of said blocks, a spring mounted in said casing adjacent its pivoted end, a plunger slidabl mounted in and hearing against said spring, a plunger rod adjuslahiy connected to said plunger, means to guide said piston, means to pivot the free end of said rod to said vehicle frame, a re coil spring bearing against the outer face of said plunger and encircling said plunger rod, a flange engaging the outer end of said spring and ci'nbra 'ing said plunger rod, a cap to said casing provided with a threaded bore, and a threaded sleeve mounted in said threaded bore, whereby adjust-- ment of the tension of said springs may be etfeoted.

2. In a \r-hicie spring in combination with a frame of a vehicle and an axle adjacent thereto, of pivotal means secured to said axle, a cylindrical casing pivoted to said pivotal means, a spring mounted 1n said casing adjacent its pivoted end, a plunger slidably mounted in and bearing against said spring, a plunger rod adjustably connected to said plunger, means to guide said plunger, means to pivot the free ends of said rod to said vehicle frame, a closure for said cylinder adapted to encircle said plunger rod, and adjustable means interposed between said closure and said plunger, and a coil spring mounted between said adjusting means and said plunger and adapted to encircle said plunger rod, whereby adjustment may be made of the component springs inelosed Within the casing independently of each other.

In Witness that I aim the foregoing I have hereunto subscribed my name this 10th day of March, 1913.

JACOB O. PARRISH.

\Vitnesses Emiesn A. STRAUSE, Mann: BATTEY.

Copies of thla patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

